Helical Gearbox Unit Sizes : 80, 90, 100, 112, 125, 140, 160, 180, 200, 225, 250, 280, 315, 355, 400, 450, 500, 560, 630
Transmission Ratio : 1.2 – 637
Input Power : 0.61 KW to 5,000 kW
Torque : Up to 117,000 Nm
Gear Ratios : Up to 130:1
Agnee's Helical Gearbox is a robust, high-performance drive solution engineered for demanding industrial duty, combining wide torque capacity with efficient, low-noise power transmission.
Agnee Helical Gearboxes are designed to handle input powers from 0.61 kW up to 5,000 kW, making them suitable for everything from medium-duty drives to very large process plants. With transmission ratios from 1.2 to 637 and gear ratios up to 130:1, they offer flexible speed reduction and high output torque up to 117,000 Nm.
These gearboxes use case-hardened and profile-ground steel helical gears with inclined teeth for smooth torque transfer between parallel or right-angle shafts, significantly reducing vibration and operating noise while improving efficiency. The heavy-duty housing in cast iron with options for foot, flange, hollow shaft, vertical or horizontal mounting supports continuous, intermittent, heavy-duty and shock-load duty cycles.
The wide size range (unit sizes 80 to 630) allows precise selection for applications such as agitators, conveyors, crushers, cranes, large ball mills, mixers, aerators, fin coolers, kneaders and thickeners where reliability and uptime are critical. Industries including sugar, cement, paper, solvent extraction, rubber, steel, power plants, mining, minerals and chemical processing benefit from long service life, high overload capacity and low maintenance requirements.
For cooling tower and heat-exchanger duties, the gearbox uses case-hardened and lapped steel spiral bevel gears to transmit torque at right angles with high efficiency. A unicase design with pumpless lubrication and three-point foundation simplifies installation, reduces auxiliary components and enhances reliability in continuous operation.
A detailed technical datasheet and GA drawing are available to support selection, engineering and integration into OEM equipment or retrofit projects. These documents provide dimensional details, rating data and mounting information to ensure correct application and faster project execution.
For applications > 50KW Agitators, Conveyors, Crushers, Cranes, Larger Ball Mills, Mixers, Aerators, Fin Cooler Drives, Kneaders, Thickeners Case hardened and Profile ground Steel Gears with inclined tooth to transmit the torque between parallel / Right Angle shafts with minimum noise.
Industries Covered - Sugar, Cement, Paper, Solvent Extraction, Rubber, Steel Industry, Power Plants, Mines and Minerals and Chemical.
| Parameter | Specification |
| Unit Sizes | 80, 90, 100, 112, 125, 140, 160, 180, 200, 225, 250, 280, 315, 355, 400, 450, 500, 560, 630 |
| Transmission Ratio | 1.2 to 637:1 |
| Input Power Range | 0.61 kW to 5,000 kW |
| Output Torque | Up to 117,000 Nm |
| Gear Ratio | Up to 130:1 |
| Efficiency | Up to 96% per stage |
| Service Factor | 1.0 to 2.5 depending on application |
| Component | Material / Specification |
| Gears | Case-hardened and profile-ground alloy steel (20MnCr5, 16MnCr5) |
| Gear Hardness | 58-62 HRC surface hardness |
| Gear Accuracy | DIN 3962 Grade 6 or better |
| Housing | Close-grained cast iron (FG 200 / FG 260) or fabricated steel |
| Shafts | Forged and heat-treated alloy steel (EN-8, EN-19, EN-24) |
| Bearings | Heavy-duty roller or ball bearings (SKF, FAG, NTN equivalent) |
| Seals | Nitrile rubber (NBR) or Viton oil seals |
| Paint Finish | Two-coat epoxy enamel, RAL 5010 (Blue) or customer specified |
| Parameter | Specification |
| Ambient Temperature | -20°C to +50°C |
| Duty Cycle | Continuous, Intermittent, Heavy-Duty, Shock Load |
| Mounting Position | Horizontal, Vertical, Inclined (specify orientation) |
| Mounting Type | Foot, Flange, Shaft Mount, Hollow Shaft |
| Input Configuration | Solid shaft, Motor flange (IEC / NEMA), Hydraulic motor adaptor |
| Output Configuration | Solid shaft, Hollow shaft with keyway, Splined shaft, Shrink disc |
| Lubrication | Oil bath (ISO VG 220/320/460) or forced lubrication for larger sizes |
| Noise Level | < 85 dB(A) at 1m distance |
| Protection Class | IP 55 standard (IP 65 optional) |
Backstop Device: Prevents reverse rotation
Forced Cooling: External cooling fan or oil circulation system for high thermal loads
Heating Elements: For operation in extremely cold environments
Torque Arm: For shaft-mounted units
Special Sealing: Enhanced sealing for dusty or washdown environments
Position Monitoring: Encoders, proximity switches, or limit switches
Temperature Monitoring: PT100 sensors or thermostats
Vibration Monitoring: Accelerometer mounts
Special Paint: Tropical, marine, or food-grade coatings
Custom Ratios: Non-standard ratios available on request
Design Standards: AGMA 6010, ISO 12925, DIN 3990
Quality Certification: ISO 9001:2015
Testing: No-load and full-load testing as per standards
Documentation: Test certificates, dimensional drawings, installation manual, spare parts list
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